#include <stdio.h>
#include <time.h>
#include <stdlib.h>
#define N 3000

/*求π的近似值(2)*/

void main()
{
    float x,y;
    int c=0,d=0;
    randomize();
    while(c++<=N)
    {
        x=random(101);
        y=random(101);
        if(x*x+y*y<=10000)
        d++;
    }
    printf("pi=%f\n",4.*d/N);
}
